According to Kathy Duva, Glazkov is set to return on August 9th.

She also said "We have not been approached by HBO nor have we been approached by Gary Shaw about such a fight and, at this point, Glazkov’s summer plans are already in place."

Boxing News | Duva: Glazkov starts a new life today in America

If a Jennings-Glazkov match did take place...I'd lean towards Jennings on points.